Advertisements
Advertisements
Question
Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion.
Advertisements
Solution
We make use of muscular force to hold a bucket of water above the ground. This muscular force acts against the force of gravity that pulls the bucket towards the ground. The two forces are equal in magnitude but opposite in direction. Therefore, the net force on the bucket is zero. Hence, there is no change in its state of motion.
APPEARS IN
RELATED QUESTIONS
A blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron?
A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad.
When an elephant drags a wooden log over the land, the forces that are applied on the log are ______, ______ and ______.
Explain in your own words and give one example.
The force of friction
Why powder is sprinkled on a carrom board?
In what way are we different the force of friction and gravitational force?
Write an answer to the following question in your own words.
What is meant by weight?
Solve the following crossword puzzle.

Down:
(1) _______ force is to be applied to push a scooter that has failed.
(2) _________ force can be used to pick up scattered pins.
Across:
(1) A _______ pulls an iron nail towards itself.
(3) ________ force was used when the farm was ploughed with a tractor.
(4) It is due to the force of _________ that raindrops fall to the ground.
Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown in Fig. 9.1. Calculate the acceleration and frictional force of the floor on the ball.

Non-contact forces, such as gravity and magnetism, are able to work over a distance because they act through what?
